/**
* Internal call method to actually perform the Pyro method call and process the result.
*/
private object call(string method, ushort flags, params object[] parameters)
{
lock (this) {
connect();
unchecked {
sequenceNr++; // unchecked so this ushort wraps around 0-65535 instead of raising an OverflowException
}
}
if (parameters == null)
{
parameters = new object[] {}
}
;
PyroSerializer ser = PyroSerializer.GetFor(Config.SERIALIZER);
byte[] pickle = ser.serializeCall(objectid, method, parameters, new Dictionary <string, object>(0));
var msg = new Message(Message.MSG_INVOKE, pickle, ser.serializer_id, flags, sequenceNr, null);
Message resultmsg;
lock (this.sock) {
IOUtil.send(sock_stream, msg.to_bytes());
if (Config.MSG_TRACE_DIR != null)
{
Message.TraceMessageSend(sequenceNr, msg.get_header_bytes(), msg.get_annotations_bytes(), msg.data);
}
pickle = null;
if ((flags & Message.FLAGS_ONEWAY) != 0)
{
return(null);
}
resultmsg = Message.recv(sock_stream, new ushort[] { Message.MSG_RESULT });
}
if (resultmsg.seq != sequenceNr)
{
throw new PyroException("result msg out of sync");
}
if ((resultmsg.flags & Message.FLAGS_COMPRESSED) != 0)
{
// we need to skip the first 2 bytes in the buffer due to a tiny mismatch between zlib-written
// data and the deflate data bytes that .net expects.
// See http://www.chiramattel.com/george/blog/2007/09/09/deflatestream-block-length-does-not-match.html
using (MemoryStream compressed = new MemoryStream(resultmsg.data, 2, resultmsg.data.Length - 2, false)) {
using (DeflateStream decompresser = new DeflateStream(compressed, CompressionMode.Decompress)) {
MemoryStream bos = new MemoryStream(resultmsg.data.Length);
byte[] buffer = new byte[4096];
int numRead;
while ((numRead = decompresser.Read(buffer, 0, buffer.Length)) != 0)
{
bos.Write(buffer, 0, numRead);
}
resultmsg.data = bos.ToArray();
}
}
}
if ((resultmsg.flags & Message.FLAGS_EXCEPTION) != 0)
{
Exception rx = (Exception)ser.deserializeData(resultmsg.data);
if (rx is PyroException)
{
throw (PyroException)rx;
}
else
{
PyroException px = new PyroException("remote exception occurred", rx);
PropertyInfo remotetbProperty = rx.GetType().GetProperty("_pyroTraceback");
if (remotetbProperty != null)
{
string remotetb = (string)remotetbProperty.GetValue(rx, null);
px._pyroTraceback = remotetb;
}
throw px;
}
}
return(ser.deserializeData(resultmsg.data));
}
/// <summary>
/// Internal call method to actually perform the Pyro method call and process the result.
/// </summary>
private object internal_call(string method, string actual_objectId, ushort flags, bool checkMethodName, params object[] parameters)
{
actual_objectId = actual_objectId ?? this.objectid;
lock (this) {
connect();
unchecked {
sequenceNr++; // unchecked so this ushort wraps around 0-65535 instead of raising an OverflowException
}
}
if (pyroAttrs.Contains(method))
{
throw new PyroException("cannot call an attribute");
}
if (pyroOneway.Contains(method))
{
flags |= Message.FLAGS_ONEWAY;
}
if (checkMethodName && Config.METADATA && !pyroMethods.Contains(method))
{
throw new PyroException(string.Format("remote object '{0}' has no exposed attribute or method '{1}'", actual_objectId, method));
}
if (parameters == null)
{
parameters = new object[] {}
}
;
PyroSerializer ser = PyroSerializer.GetFor(Config.SERIALIZER);
byte[] pickle = ser.serializeCall(actual_objectId, method, parameters, new Dictionary <string, object>(0));
var msg = new Message(Message.MSG_INVOKE, pickle, ser.serializer_id, flags, sequenceNr, this.annotations(), pyroHmacKey);
Message resultmsg;
lock (this.sock) {
IOUtil.send(sock_stream, msg.to_bytes());
if (Config.MSG_TRACE_DIR != null)
{
Message.TraceMessageSend(sequenceNr, msg.get_header_bytes(), msg.get_annotations_bytes(), msg.data);
}
// ReSharper disable once RedundantAssignment
pickle = null;
if ((flags & Message.FLAGS_ONEWAY) != 0)
{
return(null);
}
resultmsg = Message.recv(sock_stream, new [] { Message.MSG_RESULT }, pyroHmacKey);
}
if (resultmsg.seq != sequenceNr)
{
throw new PyroException("result msg out of sync");
}
responseAnnotations(resultmsg.annotations, resultmsg.type);
if ((resultmsg.flags & Message.FLAGS_COMPRESSED) != 0)
{
_decompressMessageData(resultmsg);
}
if ((resultmsg.flags & Message.FLAGS_ITEMSTREAMRESULT) != 0)
{
byte[] streamId;
if (!resultmsg.annotations.TryGetValue("STRM", out streamId))
{
throw new PyroException("result of call is an iterator, but the server is not configured to allow streaming");
}
return(new StreamResultIterator(Encoding.UTF8.GetString(streamId), this));
}
if ((resultmsg.flags & Message.FLAGS_EXCEPTION) != 0)
{
Exception rx = (Exception)ser.deserializeData(resultmsg.data);
if (rx is PyroException)
{
throw (PyroException)rx;
}
else
{
PyroException px;
// if the source was a PythonException, copy its message and python exception type
PythonException pyx = rx as PythonException;
if (pyx == null)
{
px = new PyroException(null, rx);
}
else
{
px = new PyroException(rx.Message, rx);
px.PythonExceptionType = pyx.PythonExceptionType;
}
PropertyInfo remotetbProperty = rx.GetType().GetProperty("_pyroTraceback");
if (remotetbProperty != null)
{
string remotetb = (string)remotetbProperty.GetValue(rx, null);
px._pyroTraceback = remotetb;
}
throw px;
}
}
return(ser.deserializeData(resultmsg.data));
}
/// <summary>
/// Perform the Pyro protocol connection handshake with the Pyro daemon.
/// </summary>
protected void _handshake()
{
var ser = PyroSerializer.GetFor(Config.SERIALIZER);
var handshakedata = new Dictionary <string, Object>();
handshakedata["handshake"] = pyroHandshake;
if (Config.METADATA)
{
handshakedata["object"] = objectid;
}
byte[] data = ser.serializeData(handshakedata);
ushort flags = Config.METADATA? Message.FLAGS_META_ON_CONNECT : (ushort)0;
var msg = new Message(Message.MSG_CONNECT, data, ser.serializer_id, flags, sequenceNr, annotations(), pyroHmacKey);
IOUtil.send(sock_stream, msg.to_bytes());
if (Config.MSG_TRACE_DIR != null)
{
Message.TraceMessageSend(sequenceNr, msg.get_header_bytes(), msg.get_annotations_bytes(), msg.data);
}
// process handshake response
msg = Message.recv(sock_stream, new [] { Message.MSG_CONNECTOK, Message.MSG_CONNECTFAIL }, pyroHmacKey);
responseAnnotations(msg.annotations, msg.type);
object handshake_response = "?";
if (msg.data != null)
{
if ((msg.flags & Message.FLAGS_COMPRESSED) != 0)
{
_decompressMessageData(msg);
}
try {
ser = PyroSerializer.GetFor(msg.serializer_id);
handshake_response = ser.deserializeData(msg.data);
} catch (Exception) {
msg.type = Message.MSG_CONNECTFAIL;
handshake_response = "<not available because unsupported serialization format>";
}
}
if (msg.type == Message.MSG_CONNECTOK)
{
if ((msg.flags & Message.FLAGS_META_ON_CONNECT) != 0)
{
var response_dict = (IDictionary <object, object>)handshake_response;
_processMetadata((IDictionary <object, object>)response_dict["meta"]);
handshake_response = response_dict["handshake"];
try {
validateHandshake(handshake_response);
} catch (Exception) {
close();
throw;
}
}
}
else if (msg.type == Message.MSG_CONNECTFAIL)
{
close();
throw new PyroException("connection rejected, reason: " + handshake_response);
}
else
{
close();
throw new PyroException(string.Format("connect: invalid msg type {0} received", msg.type));
}
}
/// <summary>
/// Perform the Pyro protocol connection handshake with the Pyro daemon.
/// </summary>
protected void _handshake()
{
var ser = PyroSerializer.GetSerpentSerializer();
var handshakedata = new Dictionary <string, object> {
["handshake"] = pyroHandshake
};
handshakedata["object"] = objectid;
var data = ser.serializeData(handshakedata);
ushort flags = 0;
if (correlation_id != null)
{
flags |= Message.FLAGS_CORR_ID;
}
var msg = new Message(Message.MSG_CONNECT, data, ser.serializer_id, flags, sequenceNr, annotations(), correlation_id);
IOUtil.send(sock_stream, msg.to_bytes());
if (Config.MSG_TRACE_DIR != null)
{
Message.TraceMessageSend(sequenceNr, msg.get_header_bytes(), msg.get_annotations_bytes(), msg.data);
}
// process handshake response
msg = Message.recv(sock_stream, new [] { Message.MSG_CONNECTOK, Message.MSG_CONNECTFAIL });
responseAnnotations(msg.annotations, msg.type);
object handshake_response = "?";
if (msg.data != null)
{
if ((msg.flags & Message.FLAGS_COMPRESSED) != 0)
{
_decompressMessageData(msg);
}
try {
ser = PyroSerializer.GetFor(msg.serializer_id);
handshake_response = ser.deserializeData(msg.data);
} catch (Exception) {
msg.type = Message.MSG_CONNECTFAIL;
handshake_response = "<not available because unsupported serialization format>";
}
}
switch (msg.type)
{
case Message.MSG_CONNECTOK:
var response_dict = (IDictionary)handshake_response;
_processMetadata((IDictionary)response_dict["meta"]);
handshake_response = response_dict["handshake"];
try {
validateHandshake(handshake_response);
} catch (Exception) {
close();
throw;
}
break;
case Message.MSG_CONNECTFAIL:
close();
throw new PyroException("connection rejected, reason: " + handshake_response);
default:
close();
throw new PyroException($"connect: invalid msg type {msg.type} received");
}
}